1. UNDESA, World Population Prospects: The 2012 Revision, Volume II, Demographic Profiles (United Nations, Department of Economic and Social Affairs, Population Division, 2013), pp. 439; https://esa.un.org/unpd/wpp/publications/Files/WPP2012_Volume-II-Demographic-Profiles.pdf.
2. A world at risk: Aggregating development trends to forecast global habitat conversion;Oakleaf;PLOS ONE,2015
3. Addressing China’s grand challenge of achieving food security while ensuring environmental sustainability
4. B. A. Stein, P. Glick, N. Edelson, A. Staudt, Climate-Smart Conservation: Putting Adaptation Principles into Practice (National Wildlife Federation, 2014).
5. R. Colwell et al., Revisiting Leopold: Resource Stewardship in the National Parks, Report of the National Park System Advisory Board (National Park Service Advisory Board, 2012), pp. 1–24.